Pump.



W. W. WILSON.

Patented Oct. 10, 1916.

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W. W. WILSON PUMP.

APPLICATION-FRED on. 16. 1912.

Witnesses flfiulfl 2 UNITED STATES PATENT OFFICE.

WILLIAM W. WILSON, OF LOS ANGELES, CALIFORNIA.

PUMP.

Application fi1ed October 16, 1912.

To all whom it may concern:

Be it known that I, 'TILLIAM IV. VVILSON, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to pumps, and more particularly to deep well pumps for raising water, in which two valved pistons, simultaneously and oppositely actuated, are reciprocated to cause a constant flow at the mouth of the well or the casing therein.

In practising the invention, I provide a plurality of valve members for each of the pistons, producing a double valve beat or successive valve beats, whereby the valve, considered as a whole, opens first partially and slightly thereafter opens fully. Upon the partial opening of the valve a partial flow past. the same is permitted, which flow increases to the full when the valve becomes entirely opened. By this sequence of valve opening steps the thrust of the valve against the water column beneath it is rendered less abrupt and severe, being tempered by the rise of the initially opening valve member which is followed, as the piston continues its motion, by rise of the following valve member. Furthermore, only a partial flow past the piston takes place at the beginning of the stroke, the valve opening to full capacity as the stroke picks up speed and power; and when the stroke is at the full the valve becomes wide open to accommodate the full flow.

The invention has for its object to provide improvements in pumps relating to the features and elements above recited, which improvements will be superior in point of relative simplicity and inexpensiveness of construction and organization, combined with economy in power consumption, positiveness in operation, length of life, steadiness and constancy and volume of flow, and reliability, and which will be generally superior in point of general efliciency and serviceability.

With the above and other objects in view, and with the above'and equivalent and allied Specification of Letters Patent.

Patented Oct. 10, 1916.

Serial No. 726,062.

features entering into an embodiment there of, the invention consists in the novel and useful provision, formation, construction, combination, association and relative a1 rangement of parts, members and features all as hereinafter described, shown in the drawings, and finally pointed out in claims,

In the drawings: Figure 1 is a central vertical sectional view of a portion of a deep well, with a casing therein, a portion of a pump organized to embody the invention being shown therein, one of the two working valved pistons being completely shown, together with the pump rod of the other or lower working valved piston; Fig. 2 is a fragmentary view of the body of the lower piston showing the piston rod thereof con nected with the same, and a portion of the valve, being the piston rod shown in Fig. 1; Fig. 3 is a transverse sectional view, taken upon the line X X Fig. 1; and, Fig. 4 is a transverse sectional view, taken upon the line X*X Fig. 1.

Corresponding parts in all the figures are denoted by the same reference characters.

Referring now with particularity to the drawings, A designates the valved piston of a pump, two of which are preferably employed, and reciprocating in opposite directions, one beneath the other, in the well, whereby one piston is lowered to receive its load while the other is lifting its load, thus setting up a constant flow at the mouth of the well. The pistons A, only one of which is shown in the drawings, are identical in organization, being suspended respectively, the lower piston from a piston rod B and the upper piston from a piston sleeve or hollow rod C within which the piston rod B operates. The lower piston is directly mounted upon a valve stem Z) which is suspended from the lower end of the piston rod B; the piston sleeve at its lower end, and the valve stem at its lower end, being each screw threaded, as at 5, for reception of the fixed valved piston 0, the movable valve members (Z and 6 being slidable upon the sleeve C, with respect to the upper valve, and

valve. D designates a pump barrel or casing within a well, which casing the fined valved piston 0 closely engages in working fit.

I will now set forth the specific construction and arrangement of the parts and features shown in the embodiment disclosed in the drawings, as follows :The valved piston 0 comprises an inner two-part annulus 6 and an outer annulus 7 rigidly connected by vertical webs 8 radially disposed, providing passages between the webs for the flow of the water. The inner annulus 6 is threaded upon the piston sleeve C by the screw threads 5. Surrounding the outer annulus 7 are a plurality of packing rings 9 which hold in place cupped packings 10 which closely engage the casing D. A nut 12 is applied to the screw threads 5 beneath the inner annulus 6 holding the valved piston 0 in place. The outer annulus 7 is of greater height than the inner annulus 6, and the upper face thereof is beveled or inclined upwardly and outwardly, as at 7. The

7 upper face of the inner annulus 6 is beveled downwardly and outwardly, as at 6 its outer rim lying in the plane of the beveled face 7.

The valve member cl comprises an inner annulus 13 slidable in close fit upon the sleeve C or the stem 5 above the screw threads 5 and limited in its upward play by an annular shoulder 14 at the lower termination of a relatively enlarged portion 14 of the sleeve 0 or the stem 5. Threaded upon the annulus 13, as at 15, at the upper end of said annulus. is an annulus 16, playing upon the enlarged sleeve or stem portion 14 in slidable fit. The valve member d further comprises an outer annulus 17 which co-acts with the inclined top surface 7 of the annulus 7 of the piston c; said annulus 17 being rigidly connected with the inner annulus 13 by webs 18. The lower surface of the inner annulus 13 is inclined or beveled to fit and co-act with the upper surface 6 of the annulus 6 'in part; and in part is divergently beveled or inclined as at 13 to lie in the plane of the top surface 7 of the annulus 7. The

lower portion of the annulus 13 is enlarged as at 13 so that the beveled portion 13 overhangs the annulus 6, forming an annular ledge projecting into the clearance between the annuli 6 and 7. The upper surface of the enlargement 13 is downwardly and outwardly beveled or inclined, as at 13, in parallelism with the upper surface 6 of the annulus 6. The lower surface of the annulus 17 is inclined to fit and co-act with the upper surface 7 of the annulus 7. The upper surface 17 of the annulus 17 is inclined or beveled inwardly and downwardly, in parallelism with the upper surface of the annulus 7. The valve member 6 comprises an annular bell-shaped shell or dome 19,

the crown 20 of which slidably fits the annulus 16. he closed bottom wall 19 of the shell 19 is inclined or beveled clownwardly and inwardly to fit the upper inclined surface 17 of the annulus 17, such inclined lower surface eo-acting with such top surface 17 and extending to the outer margin of thetop surface 13 of the enlargement 13 of the annulus 13. The remaining portion of the bottom wall 19 is inclined downwardly and outwardly to fit and co-act with the inclined upper surface 13 of the enlarged portion 13 of the annulus 13. Said bottom wall 19 slidably fits the annulus 13, engaging with the lower end of the annulus 16 to limit the upward movement of the shell 19 or valve member 6, the upward movement of the valve member (Z being limited, as stated, by engagement of the upper end of the annulus 13 with the shoulder 14;.

The top portion of the inner wall of the outer annulus 7 is upwardly and inwardly curved, as at 7", to meet the inner diameter of the lower portion of the outer annulus 17,

the inner wall 17 of which is inwardly and upwardly curved. The outer walls of the annuli 6 and 13 are vertical or of constant diameter.

The mode of operation and advantages of the improved pump construction and organization constituting the invention will be readily understood from the foregoing description, taken in connection with the drawings and the following statement :The action of both of the valved pistons is the same, as to the sequence of movement of the several valve members. The valve members are shown in the drawings in lifting positions. When the lift of either piston has been terminated, and the descent commences, such descent is opposed by the column of water beneath the piston. The thrust of the piston against this column of water causes the valve member 0 to first rise, opening the annular space between the annuli 13 and 17, and permitting the flow of water above the piston member 0 and valve member cl and beneath the bottom wall 19 of the valve member 6. During the continuation of the lowering of the valve piston, the bottom wall 19 of the valve member 6 comes into contact with the lower surface of the sleeve 16 of the valve member (Z, and the thrust against the column of water causes the valve member 6 to lift the valve member d, both moving upwardly jointly until the upper surface of the annulus 13 comes into engagement with the shoulder 14. This action withdraws the annuli 13 and 17 from the upper surfaces of the annuli 6 and 7 permitting the water to flow upwardly through the valve member d and also between the same and the piston memher a, through the relatively enlarged space caused by the elevation of the lower surface portion 13 of the enlargement 13 at the lower end of the annulus l3. ater thus flows upwardly into or is received within the space above the piston, passing both between the piston member 0 and the valve member (Z and the valve members 6 and d, the greater fiow=being permitted during the completion of the downward stroke of the valved piston than was permitted during the initiation of this stroke. Also, as it has been seen, the valve opens in two beats or steps, or by successive elevations of the valve members 6 and (Z, in the order stated, so that the thrust of the piston upon the column of water beneath it is yieldingly received'and translated into valve movement gradually or in successive steps, or beats, of valve members. This provides for smoothness of pump action and radical decrease of jar and elimination of violent stresses. Such decrease and elimination are of great importance in pumps such as referred to provided with two valved pistons reciprocating oppositely to act upon the same column of water. hen two pistons are so used the thrust of the descending upper piston upon the column of water above the ascending lower piston is much more extreme than when one piston acts alone upon the water column. By providing the valved piston organization described operating with the sequence of steps set forth, this thrust is yieldingly received, and the rack and jar otherwise present are eliminated, with the attendant advantage The increase in size of the water passage through the valved piston as depression of the piston is continued is also of high advantage, causing an even flow during the entire phase of downward movement. The dimensions of the several valved piston members, and the parts thereof, their relative arrangement and association are all determined with respect to the size of the water column to be dealt with, the speed of operation of the piston or pistons and the length of piston stroke. It will be understood that as soon as the piston commences to rise to lift the column of water above it, the pressure of this column acting upon the valve members 6 and (Z returns the same to the seated positions shown in the drawings, the valve member 6 sliding downwardly upon the valve member (Z and the valve member (Z finally becoming seated upon the piston member 0, with the valve member 6 seated upon the valve member 01. -It is to be noted that the outwardly projecting lower surface portion 13 of the lower enlargement 13 of the annulus 13 of the valve member cl is not of sufficient superficial area to cause the valve (Z to rise under thrust of such surface portion 13 upon arrangement of parts, members and features shown and described, but reserve the right to vary the same, in adapting the improvements to varying conditions of use, without departing from the spirit of the invention or the terms of the following claims.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. A pump valve, comprising an annular lower member having an annular liquid passage and an inclined top surface, an intermediate annular valve member having a lower surface co-acting with the top surface of said lower valve member and having a liquid passage registering with and of less capacity than the liquid passage of the lower vali e member, said intermediate valve member having an upper surface inclined .similarly to the upper surface of said lower valve member, and an upper annular valve member having a lower surface inclined to co-act with the upper surface of the intermediate valve member, said intermediate valve member normally seating upon said lower valve member and said upper valve member normally seating upon said intermediate valve member, all of said valve members being relatively movable, said upper valve member and said intermediate valve member having portions arranged to co-engage to cause joint movement of said upper valve member and said intermediate valve member subsequent to relative movement thereof and under thrust upon said upper valve member.

2. A pump valve, comprising an annular lower member having an annular liquid passage and an inclined top surface, an intermediate annular valve member having a lower surface co-acting with the top surface of said lower valve member and having a liquid passage registering with and of less capacity than the liquid passage of the lower valve member, said intermediate valve member having an upper surface inclined similarly to the upper surface of said lower valve member, and an upper annular valve member having a lower surface inclined to co-act with the upper surface of the intermediate valve member, said intermediate valve member normally seating upon said lower valve member and said upper valve member normally seating upon said intermediate valve member, all of said valve members being relatively movable, said upper valve member and said intermediate valve member having portions arranged to (Jo-engage to cause joint movement of said upper valve member and said intermediate valve member subsequent to name to this specification in the presence of two subscrlblng wltnesses.

WILLIAM W. WILSON.

relativ movement thereof; and means lim- Vitnesses: itlng such Joint movement. RAYMOND IvEs BLAKESLEE,

In testimony whereof, I have signed my H. H. HARRIS.

copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G. 

